Sera Prognostics (SERA) Chief Scientific Officer files Form 4 showing no trades

Rhea-AI Filing Summary

SERA PROGNOSTICS, INC. filed a Form 4 for Chief Scientific Officer John J. Boniface. The filing shows no reported purchases, sales, gifts, exercises, or other insider transactions, with all transaction counts and share amounts listed as zero in the summary data.

Key Terms

Form 4, Chief Scientific Officer, reporting person

3 terms

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Chief Scientific Officer financial

""officer_title": "Chief Scientific Officer""

reporting person regulatory

""reportingPersons": [ { "name": "Boniface John J.""

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Boniface John J.

(Last) (First) (Middle)

C/O SERA PROGNOSTICS, INC.

2749 EAST PARLEYS WAY, SUITE 200

(Street)

SALT LAKE CITY UTAH 84109

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SERA PROGNOSTICS, INC. [ SERA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Scientific Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exit Form 4 filed solely to report that, as of March 12, 2026, the Reporting Person is no longer designated as an officer of the Issuer within the meaning of Rule 16a-1 of the Securities Exchange Act of 1934, as amended.

	/s/ Benjamin G. Jackson, Attorney-in-fact	05/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What does the SERA Form 4 filing by John J. Boniface show?

The Form 4 for SERA’s Chief Scientific Officer John J. Boniface reports no insider transactions. All transaction counts and share amounts, including buys, sells, exercises, gifts, and tax withholdings, are recorded as zero in the summary section of the filing.

Did SERA’s Chief Scientific Officer buy or sell any shares in this Form 4?

No, SERA’s Chief Scientific Officer did not buy or sell shares in this Form 4. The transaction summary lists zero buy shares, zero sell shares, and no derivative transactions, indicating no reported trading activity in the covered period.

Are there any option exercises or derivative transactions in this SERA Form 4?

No, there are no option exercises or other derivative transactions reported. The exerciseCount, exerciseShares, and derivativeTransactionCount fields are all zero, and the derivativeSummary section is empty, indicating no activity in derivative securities for this filing.

Does the SERA Form 4 filing include any gifts or tax-withholding share dispositions?

No, the Form 4 does not include gifts or tax-withholding dispositions. The summary data shows giftCount and giftShares as zero, and taxWithholdingCount and taxWithholdingShares also as zero, reflecting no such transfers in the reported period.

What role does John J. Boniface hold at SERA PROGNOSTICS, INC.?

John J. Boniface is identified as an officer of SERA PROGNOSTICS, INC., holding the title of Chief Scientific Officer. He is not listed as a director or ten percent owner in the reporting person information associated with this Form 4 filing.